Matteo Cantiello deleted file Seti.tex  about 10 years ago

Commit id: c5092b34eca611b21ccbbdea7040d281634a229e

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In order to estimate the number of technological civilizations that might exist among the stars, in 1961 Frank Drake proposed the following simple equation     $N = R \times f_p \times n_e \times f_l \times f_i \times f_c \times L$